reporter: early saturday morning, josh brent was speeding on a service road in a dallas suburb when his vehicle hit a curb and flipped. >> our initial indication is that when officers arrived on scene, mr. brent was removing -- dragging mr. brown from the vehicle. i should also point out that the vehicle actually did catch on fire. >> the passenger, brent's cowboys teammate, 25-year-old jerry brown, was pronounced dead at the hospital. brent was initially arrested on suspicion of drunk driving after failing a sobriety test and after brown died, that charge was upgraded to intoxication manslaughter. cowboys owner jerry jones issued a statement saying, we are deeply saddened by the news of this accident and the passing of jerry brown. at this time our hearts and prayers and deepest simple this are with the members of jerry's family and all those who knew him and loved him. this incident comes a week after kansas city chiefs linebacker javon belcher killed his girlfriend and then took his own life at the team's practice facility. a newly released video taken before the murder-suicide shows